MCP SDK
Components for building MCP servers that enhance LLM reasoning with custom data, code, and context.
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Make Your LLM Smarter
LLM clients like ChatGPT, Claude, Gemini, Llama, and Grok perform best when given access to the data and logic that is most relevant to you. While LLMs can natively access public data, providing access to specific data stores and code snippets can help maximize the precision and accuracy of your prompt results. Model Context Protocol (MCP) servers facilitate communication between LLM clients and your organization's data contexts to help optimize the usefulness of LLMs.
MCP SDK is a development library that streamlines implementation of MCP servers. Our components use an intuitive event-driven API to handle MCP requests and provide opportunities to execute custom code in response. Whether you need to tell the LLM client about data resources it should read, code snippets it should execute, or pre-defined prompts it can process, MCP SDK ensures that your MCP server behaves exactly the way you want. MCP SDK supports all major protocol features like tools, sampling, prompts, and resources.
Bi-Directional Communication
In addition to improving the accuracy and relevance of LLMs, MCP SDK helps you embed LLM reasoning into your own code and back-end data contexts. MCP servers built with MCP SDK support bi-directional communication so that LLMs can communicate with your organization's resources, and also your solutions can communicate with LLMs. As a result, your database queries or scripting logic can seamlessly integrate with LLM prompt responses.
Easy Setup
MCP SDK ensures that interfacing with LLM clients is as easy as possible. With just a few basic configuration settings, your LLM client can launch your MCP server quietly in the background to facilitate communication. Whether you want to communicate over standard input and output or HTTP, MCP SDK minimizes the overhead required to integrate with all standard LLM clients.
MCP Tool Support
Enable your LLM client to execute custom code by defining Tools available within query contexts.
Flexible Resource Integration
Provide your LLM with data through user-defined data Resources. Serve data from a file, database, cloud repository, and more.
Pre-Defined Prompts
Template common LLM prompts for reusability, with support for dynamic arguments and resource contexts.
Sample LLM Logic in Code
Bi-directional integration with your LLM client means you can query LLM reasoning within your Tools and custom code.
Uniform & Extensible Design
Very easy to use, with a uniform, intuitive, and extensible design. Common component interfaces across platforms and technologies.
Fully Integrated Components
Native software components for any supported development technology - with no dependencies on external libraries.
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Download MCP SDK or read the update highlights.
Product Features
MCP SDK includes an MCP Server component for building customized MCP servers that facilitate bi-directional communication with LLM clients.
- Full support for all major MCP features, including resources, prompts, sampling, and tools.
- Simplified handling of MCP server events through a simple, intuitive component API.
- Flexible server implementation allows for custom logic to determine what resources your LLM can access.
- Supports standard input and output channels as well as HTTP.
- Enable LLM access to your applications' unique data and logic.
- Make custom application logic callable by LLMs.
- A complete unified framework with a common, easy-to-learn object model and simplified interfaces that enable you to do more.
- Components are thread-safe on critical members.
- Fast, robust, reliable components that consume minimal resources.
- Native development components for all supported platforms and technologies.
- Rigorously tested, rock solid libraries that have undergone hundreds of thousands of hours of testing both internally by our QA team and externally through customer installations.
- Detailed reference documentation, sample applications, fully-indexed help files, and an extensive online knowledge base.
- Backed by multi-tier professional support, including free email support and enterprise-level paid support.
Supported Platforms
.NET
.NET Framework & Cross-platform Components
Based on a 100% C# codebase, with no dependencies on native code. The edition of choice for all .NET applications.
Cross-platform support for Windows, Linux, macOS, and anywhere .NET is supported. Due to OS limitations, not all features are available on all operating systems. Native libraries are also available for individual platforms.
- Fully-managed .NET components written in C#.
- Support for .NET 9, .NET 8, .NET 6, .NET 5, .NET Core 3.1, and earlier.
- Support for .NET Framework 2.0 - 4.8.
- Works with Xamarin and MAUI via .NET 6.
- .NET Standard 2.0 and 2.1 support.
- Fully asynchronous API available.
- Cross-platform support.
- Support for Windows IoT.
- Comprehensive integrated product documentation.
- Seamless integration with Visual Studio.
- Extensive sample applications written in C#.
Java
Pure Java Classes (Java/J2EE)
Pure Java Classes exposed through an intuitive API for portability across all major platforms.
- Pure Java Classes.
- Includes an extensive library of samples written in pure Java.
- J2EE version is optimized for server-side development.
- Seamless integration with popular development environments including JBuilder, Eclipse, and IntelliJ.
- Support for JDK version 1.7 and up.
Components for Model Context Protocol
The following components are included in MCP SDK. Please note that due to platform limitations, some components may not be available in all editions.
Included Samples
The following sample projects are installed with the product. Please download the trial to get started.
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